server: Performance fix in user_data

1 files changed, 4 insertions, 2 deletions

diff --git a/user_data.c b/user_data.c
index 6b9b041..125a6b4 100644
--- a/user_data.c
+++ b/user_data.c
@@ -61,8 +61,10 @@ void userdata_unregister(i64 userid,int fd){
 	if(i==data->len){
 		die("userdata_unregister(%" PRIi64 ", %d) while nonexistent",userid,fd);
 	}
-	memmove(data->fds+i,data->fds+i+1,data->len-i-1);
-	memmove(data->last_active+i,data->last_active+i+1,data->len-i-1);
+	if(i<data->len-1){
+		data->fds[i]=data->fds[data->len-1];
+		data->last_active[i]=data->last_active[data->len-1];
+	}
 	data->len--;
 	if(data->len==0){
 		ht_delete(user_hash,userid);